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MCP server · Maps

StemJSON

by · github.com/vkrychun/StemJSON

Generative UI specification for native mobile: a declarative JSON language in which AI agents write a whole feature, its data, logic and navigation included, and the iOS and Android runtimes run it natively on SwiftUI and Jetpack Compose, offline.

Unclaimed aiai-agentsandroidbackend-driven-uideclarative-uidslgenerative-uigenuiiosjetpack-composejsonkotlinllmmcpsduiserver-driven-uispecificationstemjsonswiftswiftui
InstallView source
34Low

Scored 21 days ago · breakdown

About StemJSON

StemJSON is an MCP server published by vkrychun in the Maps category: generative UI specification for native mobile: a declarative JSON language in which AI agents write a whole feature, its data, logic and navigation included, and the iOS and Android runtimes run it natively on SwiftUI and Jetpack Compose, offline.

The repository has 5 stars and 0 forks, with the last commit 3 months ago. Recent commit activity is the strongest signal that reported issues will get attention.

Install

From source
git clone https://github.com/vkrychun/StemJSON

This server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.

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Security checks

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Releases

v1.1.0StemJSON v1.1.0 · 2 Jul 2026Minor version: backwards-compatible language additions plus editorial clarifications. Modules targeting `1.0` are unaffected; a module that uses a 1.1 feature SHOULD declare `"version": "1.1"`. Added `switch()` expression function** (§8.6)…
v1.0.2StemJSON v1.0.2 · 12 Jun 2026Editorial clarification. No breaking changes; modules targeting `1.0` are unaffected. Component `type` is matched **case-insensitively**; the canonical form is lowercase (§3.2). Normalized the type catalogue (`gridRow` → `gridrow`,…
v1.0.1StemJSON v1.0.1 · 5 Jun 2026Editorial clarifications and one new appendix. No breaking changes; modules targeting `1.0` are unaffected. Clarified state propagation (a `state` action's write does not propagate through an action chain) and cross-module context…
v1.0.0StemJSON v1.0.0 · 1 May 2026Initial public release of the StemJSON specification. Full specification: [`spec/v1.0.md`](spec/v1.0.md) LLM-optimised edition: [`spec/v1.0-ai.md`](spec/v1.0-ai.md) License: [OWFa 1.0](LICENSE) with attribution requirement (§1.5) Trademark…
Questions

About StemJSON

How do I install StemJSON?

No package has been published for this server, so install it from source: clone the repository and follow its README.

Is StemJSON safe to use with an AI agent?

Its trust score is 34 out of 100 (low). Conduid hasn't run static security checks on this repository yet, so review the source yourself before granting it credentials. It has no ConduID identity yet, so agent calls to it are not receipted.

Is StemJSON still maintained?

Yes — the latest release is v1.1.0 (2 Jul 2026), and the last commit was 3 months ago. The repository has 5 stars.